Stuffing box for pumps



H'. E. PELLETIER.y

vSTUFFING BOX FOR PUMPS. APPLICATION F1LED.MAR.2, 192o1` Y lgm Patented Nov. 211, 119221,

MFG., C0., TC., 0.? EXJZABETL; NEW? SERSEY, A CBFGJATION O1 NEW' JERSEY.

STUFFINCT E02?. FOB PUMPS.

Application inea March 2, 192e.

Bc it known that l, HENRY E. Pnnnwrrnn, a zitizen ot' tl e United States, residing in the city ol Newark, ycounty oit Essex, and State oi New rici-:i have ii' yented certain new and useful iuij'noveinents in Stuffing Boxes for Pumps, of which. the following is a full, clear, and exact description, such as will enable others skilled in the art to which it pertains to make, construct. and use the same, reference being had to the accompanying drawings, and to numerals of reference marked thereon, forming a part of this speciiication.

My present invention aims to provide an improved construction ot stuffing-box, and one that can be used in connection with cylinder-heads, pumpsI and 4tor other purposes in which le; kage of fluid. around a shaft or stem is to be prevented.

The object oit my invention is to improve stuling-boites of this general character with a view of maintaining tight joint around the shaft or stein by a simple, eiicient and durable construction, in which neither bolts, springs or washers are employed.

Another object is to provide` a construction of this character, .vllerein the parts made and arranged in such manner that an oil-well will be provided as a feature of the combination.

A further object of the invention is to provide a construction of this character, which is especially adapted for use in connection with my improved pump and cylinder-head construction for which an application for Letters Patent of the United States was filed on March 2nd, 1920, Serial No. 362,737.

A practical embodiment o1l"` the invention is illustrated in the accompanying drawing, :in which- Figure 1 represents a central section through a construction embodying my improvements; and

Figure 2 is an end view of thc parts shown in Figure 1. y

in the embodiment illustrated in the ac companying drawing, 3 represents a ragment of a cylinder or other container for fluid under pressure, and 4E a bearing or packing gland cast therewith. 5 is a revoluble shaft which is operatively engaged in and extend-,S through the bearing e, and on Serial No. 362,738.

which, spacedly trom the outer end oit said bearing, is secured by means oi a key 6, a gland T having` an integral ring-shaped end 8. formed with concentric projections 9, ttor a purpose presently to appear.

10 is a cylindrical stuliingbox covering provided theretlnfougli with an axial bore, a portion of which Yat 11 is oi? a d iaineter to .make intimate tit around the shaft, and the remainder oit which isoi larger diameter' and screw-threaded to co-operate with the screw-threads formed for the purpose on the exterior end ot' the bearing 4. rlhe end of the bearing l1 is inwardly beveled all around at 13, and the confronting face ot the covering 10 is similarly beveled at 1d so as to produce, when these parts are united, an annular chamber oi" substantially V- shaped form in cross section. introduced into the chamber thus igor-med, is a packing 15, oit' ordinary character. Vhen the packing has been lfilled in and the sh aft applied in position, the covering 10 is screwed. home, compressing the packing with a wedging action and forcing it against the shaft to make and maintain a fluid-tight joint.

A portion of the periphery of the covering 10 is made with flattened regions 16 or in a form otherwise non-circular, for the suitable application of a wrench or other tool whereby to turn this part readily.

The outer face oit' the covering' 1() is provided with an annular recess 1i, in which is screw-threaded the rim iiange 18 of an oil-chamber covering 19, made circular in form and with an axial opening 20, through which the shait extends. This covering 19 in conjunction with the covering 10, provides an oil chamber 21j which. surrounds the shaft; and the oil may be introduced thereinto through an opening 22 kept normally closed by a screw plug 23.

The outer face oi? the covering` 19 is provided with an annular recess 24 corresponding to and receptive of the outer annular projection 9, thereby providing a turning engagement for the gland 7 as it rotates with the shaft 5, the inner concentric projection 9 of the gland 7 bearing against the packing, thereby providing a turning engagement against said packing as it rotates with the shaft 5 to make or maintain a fluid tight joint. Adjacent the shaft, the cover@l ing 19 is inwardly beveled at 25 so as to provide, in conjunction with the gland 7, an annular chamber for the reception of metallic or other suitable packing, whereby to make a fluid-tight joint, as in the previous instance. In order conveniently to be turned by a wrench or other. tool, the periphery of the covering 19 is made with flattened regions 26.

From the foregoing` description,'taken in Experience has demonstrated that'A the organization above described is'azhigh'ly efcient 4ene,and while Ihave shown the preferredv embodiment of ymyf present invention, I `do not wish to belimited to the exact details of construction shown and described, as obvious modifications thereof, ,not involving the exercise of invention, may be made by any skilled mechanic,.and such departures from what is 'herein set forth, I consider within the scope and termsv of my claim.

Having thus described my invention, what l claim as new and desire to secure by Letters Patent is In combination, a casing having an outwardly projecting integral screw threaded bearing provided with a beveled end, a shaft provided with a reduced portion extending through-fthe-bearing and carrying spacedly therefrom on said reduced portion a keyed A,gland formedwith a disk-shaped head having an annular projection, a packing covering mo unted on the `shaft between said bearing A`and gland-head and having a portion screw-threaded on thebearingand co-operating' with thel'beveled endrthereof to form a packingv chamber aroundthe shaft, and an oilcha'mber covering` mounted on the sha-ft adjacent lsaid'disk-shaped head and provi'ded with a beveled region to vform therewith'a .packing chamber around the shaft and provided 'further with an annular'recessforv the reception of the annular projectionof said head, `said lastnnentioned covering; being formedwit-h a lrim flange having threaded engagement with thepaclring covering toiform wit'htheflatter lan oil- 'chamber aroundthe shaft.

This specification signed and `witnessed this'Qth day of February, 1920.

AHENRY E. PELLETHR. 

